ci: add missing test group

.woodpecker/docs.yml

@@ -8,16 +8,17 @@ when:
 steps:
   markdownlint:
     image: quay.io/thegeeklab/markdownlint-cli
+    group: test
     commands:
       - markdownlint 'README.md' 'CONTRIBUTING.md'
 
   spellcheck:
     image: quay.io/thegeeklab/alpine-tools
+    group: test
     commands:
       - spellchecker --files '_docs/**/*.md' 'README.md' 'CONTRIBUTING.md' -d .dictionary -p spell indefinite-article syntax-urls
     environment:
       FORCE_COLOR: "true"
-      NPM_CONFIG_LOGLEVEL: "error"
 
   link-validation:
     image: docker.io/lycheeverse/lychee
@@ -46,9 +47,9 @@ steps:
     image: docker.io/chko/docker-pushrm:1
     secrets:
       - source: docker_password
-        target:  DOCKER_PASS
+        target: DOCKER_PASS
       - source: docker_username
-        target:  DOCKER_USER
+        target: DOCKER_USER
     environment:
       PUSHRM_FILE: README.md
       PUSHRM_SHORT: Woodpecker CI plugin to send messages to Matrix